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Oracle认证考试

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Evaluate the set of SQL statements: CREATE TABLE dept (deptno NUMBER(2), dname VARCHAR2(14), loc VARCHAR2(13)); ROLLBACK; DESCRIBE DEPT What is true about the set?()

  • A、The DESCRIBE DEPT statement displays the structure of the DEPT table.
  • B、The ROLLBACK statement frees the storage space occupied by the DEPT table.
  • C、The DESCRIBE DEPT statement returns an error ORA-04043: object DEPT does not exist.
  • D、The DESCRIBE DEPT statement displays the structure of the DEPT table only if there is a COMMIT statement introduced before the ROLLBACK statement.
正确答案:A
答案解析:
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